A survey with Copernicus of interstellar O VI absorption

Details A survey with Copernicus of interstellar O VI absorption A survey with Copernicus of interstellar O VI absorption

Nov 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974apj...193l.121j&link_type=abstract

Astrophysical Journal, vol. 193, Nov. 1, 1974, pt. 2, p. L121-L125.

Astronomy and Astrophysics

Astronomy

183

Absorption Spectra, Interstellar Extinction, Spaceborne Astronomy, Stellar Spectra, Ultraviolet Spectra, Interstellar Gas, Oao 3, Oxygen Spectra, Radial Velocity, Satellite Observation, Supernovae

Scientific paper

The presence of broad, shallow absorptions caused by O VI ions were revealed from UV spectra observations recorded by the Copernicus satellite for thirty-two stars. A table lists survey data on the stars observed for which values of the O VI column densities or their upper limits are extracted. Interstellar rather than circumstellar origin is evident from observation of the lack of correspondence between radical velocities of the stars and those of the O VI profiles. The presence of a low-density high-temperature phase of interstellar gas produced by supernova explosions is suggested.

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